Hu, C. M. and Schüller, Christian and Heitmann, Detlef
Space-asymmetry-induced plasmon mode mixing and anticrossing in coupled bilayer structures.
Physical Review B (PRB) 64; 4 , 073303.
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Other URL: http://link.aps.org/doi/10.1103/PhysRevB.64.073303
We show that the space symmetry of bilayer systems, coupled by both tunneling and Coulomb interaction, has fundamental influences on the collective charge-density excitations. In the general case of two-subband occupation, three modes with one intersubband and two (optical and acoustic, respectively) intrasubband plasmons are calculated. By breaking the space symmetry, these modes are found to be ...
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